/**
 * plugin.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2015 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

/*global tinymce:true */

tinymce.PluginManager.add('wordcount', function (editor) {
    var self = this, countre, cleanre;

    // Included most unicode blocks see: http://en.wikipedia.org/wiki/Unicode_block
    // Latin-1_Supplement letters, a-z, u2019 == &rsquo;
    countre = editor.getParam('wordcount_countregex', /[\w\u2019\x27\-\u00C0-\u1FFF]+/g);
    cleanre = editor.getParam('wordcount_cleanregex', /[0-9.(),;:!?%#$?\x27\x22_+=\\\/\-]*/g);

    function update() {
        editor.theme.panel.find('#wordcount').text(['Words: {0}', self.getCount()]);
    }

    editor.on('init', function () {
        var statusbar = editor.theme.panel && editor.theme.panel.find('#statusbar')[0];

        if (statusbar) {
            tinymce.util.Delay.setEditorTimeout(editor, function () {
                statusbar.insert({
                    type: 'label',
                    name: 'wordcount',
                    text: ['Words: {0}', self.getCount()],
                    classes: 'wordcount',
                    disabled: editor.settings.readonly
                }, 0);

                editor.on('setcontent beforeaddundo', update);

                editor.on('keyup', function (e) {
                    if (e.keyCode == 32) {
                        update();
                    }
                });
            }, 0);
        }
    });

    self.getCount = function () {
        var tx = editor.getContent({format: 'raw'});
        var tc = 0;

        if (tx) {
            tx = tx.replace(/\.\.\./g, ' '); // convert ellipses to spaces
            tx = tx.replace(/<.[^<>]*?>/g, ' ').replace(/&nbsp;|&#160;/gi, ' '); // remove html tags and space chars

            // deal with html entities
            tx = tx.replace(/(\w+)(&#?[a-z0-9]+;)+(\w+)/i, "$1$3").replace(/&.+?;/g, ' ');
            tx = tx.replace(cleanre, ''); // remove numbers and punctuation

            var wordArray = tx.match(countre);
            if (wordArray) {
                tc = wordArray.length;
            }
        }

        return tc;
    };
});